Fix printing of a non-prefix QNameValue

Author: tvdijen

src/XMLSchema/Type/QNameValue.php

@@ -97,7 +97,8 @@ protected function validateValue(string $value): void
      */
     public function getValue(): string
     {
-        return $this->getNamespacePrefix() . ':' . $this->getLocalName();
+        $prefix = $this->getNamespacePrefix();
+        return ($prefix ? $prefix . ':' : '') . $this->getLocalName();
     }
 
 

tests/XML/Assert/AnyURITest.php

@@ -49,6 +49,7 @@ public static function provideValidURI(): array
             'spaces' => [true, 'this is silly'],
             'empty' => [true, ''],
             'azure-common' => [true, 'https://sts.windows.net/{tenantid}/'],
+            'one' => [true, '1'],
         ];
     }
 }